Home / 3,177.92-4,386.24-1,999.68

Finding the Fourth Proportional to 3,177.92, 4,386.24 and 1,999.68

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Solution

The fourth proportional to 3,177.92, 4,386.24 and 1,999.68 is: 2,760.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.92 : 4,386.24 = 1,999.68 : x
  2. Step 2: Convert to fraction form
    3,177.92/4,386.24 = 1,999.68/x
  3. Step 3: Cross multiply
    3,177.92x = 4,386.24 × 1,999.68
  4. Step 4: Simplify right side
    3,177.92x = 8,771,076.40
  5. Step 5: Solve for x
    x = 8,771,076.40/3,177.92
  6. Step 6: Final answer
    x = 2,760.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.